385663260 has 24 divisors (see below), whose sum is σ = 1079857296. Its totient is φ = 102843520.

The previous prime is 385663253. The next prime is 385663277. The reversal of 385663260 is 62366583.

It is a happy number.

It is a super-2 number, since 2×385663260² = 297472300227655200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3213801 + ... + 3213920.

It is an arithmetic number, because the mean of its divisors is an integer number (44994054).

Almost surely, 2^385663260 is an apocalyptic number.

385663260 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385663260 is an abundant number, since it is smaller than the sum of its proper divisors (694194036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

385663260 is a wasteful number, since it uses less digits than its factorization.

385663260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6427733 (or 6427731 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 385663260 is about 19638.3110271734. The cubic root of 385663260 is about 727.8961506054.

The spelling of 385663260 in words is "three hundred eighty-five million, six hundred sixty-three thousand, two hundred sixty".